133515521450 has 48 divisors (see below), whose sum is σ = 250581026520. Its totient is φ = 52925368320.

The previous prime is 133515521449. The next prime is 133515521473. The reversal of 133515521450 is 54125515331.

It can be written as a sum of positive squares in 12 ways, for example, as 19345193569 + 114170327881 = 139087^2 + 337891^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133515521450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4045616 + ... + 4078484.

Almost surely, 2^133515521450 is an apocalyptic number.

133515521450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133515521450 is a deficient number, since it is larger than the sum of its proper divisors (117065505070).

133515521450 is a wasteful number, since it uses less digits than its factorization.

133515521450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33611 (or 33606 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 133515521450 in words is "one hundred thirty-three billion, five hundred fifteen million, five hundred twenty-one thousand, four hundred fifty".